Merge pull request #288 from jacobbudin/issue-216

Add title to views::Panel
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Alexandre Bury 2018-10-02 12:06:54 -07:00 committed by GitHub
commit 48d0aea92e
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@ -1,22 +1,91 @@
use align::*;
use event::{Event, EventResult};
use rect::Rect;
use theme::ColorStyle;
use unicode_width::UnicodeWidthStr;
use vec::Vec2;
use view::{View, ViewWrapper};
use Printer;
use With;
/// Draws a border around a wrapped view.
#[derive(Debug)]
pub struct Panel<V: View> {
// Inner view
view: V,
// Possibly empty title.
title: String,
// Where to put the title position
title_position: HAlign,
// `true` when we needs to relayout
invalidated: bool,
}
impl<V: View> Panel<V> {
/// Creates a new panel around the given view.
pub fn new(view: V) -> Self {
Panel { view }
Panel {
view,
title: String::new(),
title_position: HAlign::Center,
invalidated: true,
}
}
inner_getters!(self.view: V);
/// Sets the title of the dialog.
///
/// If not empty, it will be visible at the top.
pub fn title<S: Into<String>>(self, label: S) -> Self {
self.with(|s| s.set_title(label))
}
/// Sets the title of the dialog.
pub fn set_title<S: Into<String>>(&mut self, label: S) {
self.title = label.into();
self.invalidate();
}
/// Sets the horizontal position of the title in the dialog.
/// The default position is `HAlign::Center`
pub fn title_position(self, align: HAlign) -> Self {
self.with(|s| s.set_title_position(align))
}
/// Sets the horizontal position of the title in the dialog.
/// The default position is `HAlign::Center`
pub fn set_title_position(&mut self, align: HAlign) {
self.title_position = align;
}
fn draw_title(&self, printer: &Printer) {
if !self.title.is_empty() {
let len = self.title.width();
if len + 4 > printer.size.x {
return;
}
let spacing = 3; //minimum distance to borders
let x = spacing + self
.title_position
.get_offset(len, printer.size.x - 2 * spacing);
printer.with_high_border(false, |printer| {
printer.print((x - 2, 0), "");
printer.print((x + len, 0), "");
});
printer.with_color(ColorStyle::title_primary(), |p| {
p.print((x, 0), &self.title)
});
}
}
fn invalidate(&mut self) {
self.invalidated = true;
}
}
impl<V: View> ViewWrapper for Panel<V> {
@ -35,6 +104,8 @@ impl<V: View> ViewWrapper for Panel<V> {
fn wrap_draw(&self, printer: &Printer) {
printer.print_box((0, 0), printer.size, true);
self.draw_title(&printer);
let printer = printer.offset((1, 1)).shrinked((1, 1));
self.view.draw(&printer);
}
@ -47,4 +118,8 @@ impl<V: View> ViewWrapper for Panel<V> {
let inner_size = size.saturating_sub((2, 2));
self.view.important_area(inner_size) + (1, 1)
}
fn wrap_needs_relayout(&self) -> bool {
self.invalidated || self.view.needs_relayout()
}
}